Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f7070eb5c853960…

MALICIOUS

PDF

34.3 KB Created: 2021-07-07 21:05:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: df653d2b899d364d3e84c3a18cca98eb SHA-1: 6c6c1aa6316a5583d262068d656d2ae7d1d1a20c SHA-256: 8f7070eb5c853960dfe386d754bccc91c09a19f213f7865973149bd47f980719
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links, including one pointing to a known malicious redirector infrastructure at http://netcdn.tw/app/406889139/coin-master-game-hack-link-game-hack. This lure is designed to trick users into believing they are accessing a game hack generator. The presence of numerous similar URLs suggests a broad phishing or malware distribution campaign. No scripts were extracted, but the document's structure and embedded links strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/406889139/coin-master-game-hack-link-game-hack In PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/app-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/hack-para-elemental-battlegrounds-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/download-free-roblox-outfits-roblobcom_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/javascript-hack-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-get-free-robux-live-stream_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/hack-robux-using-chrome-web-store_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-robux-hack-no-servey-or-human-vervcation_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-guess-that-song-cheat_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/generator-free-robux-facil_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/lohith-gaming-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-become-headless-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-invite-friends-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/minecraft-games-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002fdf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FDF 22976 bytes
SHA-256: c890cfadeb28ec1915ad55dc0b3a5563b6a6f2ee21c3cd5045355a68b00e0ed2
font_01_sfnt_off00006394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6394 18264 bytes
SHA-256: c1c21b29a6afb4d06e4d6845aa9afd5500216469eff45eb2d027be7bd9c24dc5

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